#include"Add.h"
#include"Sub.h"
#include"Mul.h"
#include"Div.h"


int  main(){
	int  x=20,y=10,code=0;
	printf("%d + %d = %d\n",x,y,add(x,y));
	printf("%d - %d = %d\n",x,y,sub(x,y));
	printf("%d * %d = %d\n",x,y,mul(x,y));
	printf("%d / %d = %d,code:%d\n",x,y,div(x,y,&code),code);
	return 0;

}
